a{


    color: black;

}
body,h2,h3,h4,h5{
    margin: 0;
    padding: 0;

}
/*.b1:hover{*/
    /*background-color: cyan;*/
/*}*/
.b1{
position: absolute;
    top: 71px;
}
.b2{
    position: absolute;
    top: 182px;
}
.div1{
    /*background-image: url("../img/bg.gif");*/
    width: 100%;
    height: 500px;
    background-repeat: no-repeat;

    background-position-y:10px ;
}
#title1{
    font-size: 13px;
    margin-left: 10px;
    font-family: "宋体";
    font-weight: bold;
    color: aquamarine;
   position: absolute;
    top: 47px;
}
#title2{
    font-size: 13px;
    margin-left: 10px;
    font-family: "宋体";
    font-weight: bold;
    color: aquamarine;
    position: absolute;
    top: 159px;
}